I am 45 years old, and I have one child. Since the birth of my son I have always had my periods on time, I was taking birth control since my son was five weeks old , until two years ago September gone I stopped taking them. I have not missed any periods until this month (November), usually when my periods are due to come I can tell, my breast gets real senative and I have nipping pains in my stomach, but for some reason I havent seen it this month. I am sexually involve, may be once oo twice I get careless, cant you plese advise me as to what you think may be happening.

Thank you